CN109534798A - 300 tons of ladle lashed area aluminium-magnesia carbon bricks of one kind and preparation method thereof - Google Patents
300 tons of ladle lashed area aluminium-magnesia carbon bricks of one kind and preparation method thereof Download PDFInfo
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- CN109534798A CN109534798A CN201910086562.5A CN201910086562A CN109534798A CN 109534798 A CN109534798 A CN 109534798A CN 201910086562 A CN201910086562 A CN 201910086562A CN 109534798 A CN109534798 A CN 109534798A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
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- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks, it is using Brown Alundum, fused magnesite, dicalcium highly-purity magnesite, crystalline flake graphite, carbon black and metallic aluminium powder as raw material, and it resin-oatmeal and phenolic resin are added thereto are uniformly mixed and are toasted after compression moulding and obtain, wherein, Brown Alundum and dicalcium highly-purity magnesite all have independent size grading, Brown Alundum has level Four gradation, and respectively 5-3mm, 3-1mm, 1-0mm and be no more than 0.074mm, dicalcium highly-purity magnesite is with two-stage gradation, respectively 1-0mm and no more than 0.074mm.The present invention passes through based on the Brown Alundum of different-grain diameter gradation and dicalcium highly-purity magnesite, resin-oatmeal is added after being aided with fused magnesite, metallic aluminium powder, crystalline flake graphite and carbon black mixing and phenolic resin is carried out compacting and is made with certain process curve drying, to effectively reduce the porosity, bulk density, the compressive resistance of aluminium-magnesia carbon brick are improved, and then improves its service life.
Description
Technical field
The present invention relates to the ladle liner brick of fire resisting material field, specifically a kind of 300 tons of ladle lashed area are used
Aluminium-magnesia carbon brick and preparation method thereof.
Background technique
Aluminium-magnesia carbon brick refers to using special grade bauxite or emergy, magnesia and flaky graphite to be resistance to made of primary raw material
Fiery product.Aluminium-magnesia carbon brick has the advantages that high erosion resisting and other than being not easy to peel off, also has because making in addition to because carbon containing at high temperature
Used time is by the advantages of being thermally generated spinelle and show high remaining linear expansivity and outstanding thermal shock resistance and good
Shock resistance, thus become the high-quality lining brick of new development.
Aluminium-magnesia carbon brick is used primarily for the Sheng ladle liner of condition harshness, and its purpose is to avoid the occurrence of molten steel to packet
Bottom point washes away too fast, the case where causing steel ladle working layer to scrap in advance, meets packet bottom impact zone in normal conditions of use
Shock resistance demand, to guarantee that entire steel ladle working layer reaches the target life objective used.
But existing aluminium-magnesia carbon brick is in the packet bottom shock zone for 300 tons of ladles, since ladle inclusion quantity is big, steel
Packet depth is big, molten steel impacted caused by packet bottom it is also more serious, so leading to making for 300 tons of ladle lashed area aluminium-magnesia carbon bricks
With the service life generally at 45 times or so, it has been more than this number without replacement, has will result in the badly damaged of aluminium-magnesia carbon brick；
Therefore, generally the aluminium-magnesia carbon brick to 300 tons of ladle lashed area domain is being needed to replace using 40 times or so, not only affected
Efficiency, and cost is also higher.
Summary of the invention
Wash away that too fast, service life is short in order to solve existing aluminium-magnesia carbon brick when for 300 tons of ladle lashed area domains
Problem, the present invention provides a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks and preparation method thereof, by with different-grain diameter gradation
Brown Alundum and dicalcium highly-purity magnesite based on, be aided with fused magnesite, metallic aluminium powder, crystalline flake graphite and carbon black mixing after be added tree
Cosmetics and phenolic resin are carried out compacting and are made with certain process curve drying, to effectively reduce the porosity, are improved
Bulk density, the compressive resistance of aluminium-magnesia carbon brick, and then improve its service life.
The present invention to solve above-mentioned technical problem used by technical solution are as follows: a kind of 300 tons of ladle lashed area magnaliums
Carbon brick, the aluminium-magnesia carbon brick are with Brown Alundum, fused magnesite, dicalcium highly-purity magnesite, crystalline flake graphite, carbon black and metallic aluminium powder for original
Material, and resin-oatmeal and phenolic resin are added thereto are uniformly mixed and are toasted after compression moulding and obtain, the Brown Alundum and two
Calcium highly-purity magnesite all has independent size grading, to form tightly packed integrated structure in baking, improves aluminium-magnesia carbon brick
Intensity；The Brown Alundum have level Four gradation, and respectively 5-3mm, 3-1mm, 1-0mm and be no more than 0.074mm, the dicalcium
Highly-purity magnesite is with two-stage gradation, respectively 1-0mm and no more than 0.074mm；The partial size of the fused magnesite and metallic aluminium powder
Respectively 3-1mm and be no more than 0.074mm.
In the present invention, Brown Alundum 12.5-15.5kg in raw material described in every 100kg containing 5-3mm, the palm fibre containing 3-1mm
Corundum 21.5-24.5kg, the Brown Alundum 26.5-29.5kg containing 1-0mm contain the Brown Alundum 7.5- for being no more than 0.074mm
10.5kg, the fused magnesite 0.5-3.5kg containing 3-1mm, the dicalcium highly-purity magnesite 4.5-7.5kg containing 1-0mm, containing not surpassing
The dicalcium highly-purity magnesite 4.5-7.5kg for crossing 0.074mm, containing crystalline flake graphite 4.5-5.5kg, containing carbon black 0.5-1.5kg, remaining
For the metallic aluminium powder no more than 0.074mm.
It is currently preferred, the Brown Alundum 14kg in raw material described in every 100kg containing 5-3mm, the Brown Alundum containing 3-1mm
23kg, the Brown Alundum 28kg containing 1-0mm, containing the Brown Alundum 9kg for being no more than 0.074mm, the fused magnesite containing 3-1mm
2kg, the dicalcium highly-purity magnesite 6kg containing 1-0mm contain scale stone containing the dicalcium highly-purity magnesite 6kg for being no more than 0.074mm
Black 5kg, containing carbon black 1kg, remaining is the metallic aluminium powder no more than 0.074mm.
In the present invention, the additional amount of the resin-oatmeal and phenolic resin is respectively the 0.5-1.5% and 2-4% of material quality.
Currently preferred, the additional amount of the resin-oatmeal and phenolic resin is respectively the 1% and 3% of material quality.
In the present invention, the baking refers to, is uniformly heating to 200-220 DEG C with the heating rate of 8-12 DEG C/h, and
200-220 DEG C of holding 3.5-4.5h.
Currently preferred, the baking refers to, is uniformly heating to 210 DEG C with the heating rate of 10 DEG C/h, and at 210 DEG C
Keep 4h.
The preparation method of above-mentioned 300 tons of ladle lashed area aluminium-magnesia carbon bricks, claims respectively first, in accordance with the size grading
Each raw material is taken, and it is uniformly mixed with the phenolic resin of the resin-oatmeal of total mass of raw material 0.5-1.5% and total mass of raw material 2-4%
Compression moulding afterwards is finally uniformly heating to 200-220 DEG C with the heating rate of 8-12 DEG C/h, and in 200-220 DEG C of holding 3.5-
4.5h, natural cooling getting the product.
In the present invention, MgO has a very strong resistivity to basic slag and high scum, at the same graphite to the angle of wetting of slag compared with
Greatly, slag should not permeate, and metamorphic layer is thin.Al2O3It is reacted at high temperature with the MgO in matrix and generates aluminum-spinel, magnalium point is brilliant
Stone elasticity modulus is small, and thermal expansion coefficient is small, the secondary magnoferrite in transferable periclase, and is accompanied by volume expansion, can
To block stomata, the further infiltration of slag can be inhibited；Spinelle under high temperature in matrix simultaneously, can capture in slag
FeO, MnO form spinel solid solution, also can be further improved the resistance to slag of aluminium-magnesia carbon brick, and aluminium-magnesia carbon brick is due to having
Certain expansion character, the tight, good integrity using rear brickwork joint.
The utility model has the advantages that the present invention is by being aided with electricity based on the Brown Alundum of different-grain diameter gradation and dicalcium highly-purity magnesite
Resin-oatmeal is added after fused magnesia, metallic aluminium powder, crystalline flake graphite and carbon black mixing and phenolic resin carries out compacting and with certain work
The drying of skill curve is made, to effectively reduce the porosity, improves bulk density, the compressive resistance of aluminium-magnesia carbon brick, Jin Erti
Its high service life；And using resin-oatmeal and phenolic resin as bonding agent, carbon black and aluminium oxide are acted on during the sintering process,
A kind of high performance refractory material of low-carbon is obtained, compared with other preparation methods, raw material is simple and easy to get, without adding rare gold
Belong to the additives such as oxide, this method raw material sources are extensive, price is lower, simple process is, it can be achieved that large-scale industrialization promotion.
Detailed description of the invention
Fig. 1 is the baking curve graph of the embodiment of the present invention 3:
Fig. 2 is the SEM figure that the embodiment of the present invention 3 prepares product；
Fig. 3 is the SEM figure that the embodiment of the present invention 2 prepares product.
Specific embodiment
Further details of elaboration is done to technical solution of the present invention combined with specific embodiments below.
Embodiment 1
A kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks, the aluminium-magnesia carbon brick is with Brown Alundum, fused magnesite, dicalcium high purity magnesium
Sand, crystalline flake graphite, carbon black and metallic aluminium powder are raw material, and addition resin-oatmeal and phenolic resin are uniformly mixed and are pressed into thereto
Baking obtains after type, and the Brown Alundum and dicalcium highly-purity magnesite all have independent size grading, tight to be formed in baking
Closs packing integrated structure improves the intensity of aluminium-magnesia carbon brick；The Brown Alundum have level Four gradation, and respectively 5-3mm, 3-1mm,
1-0mm and be no more than 0.074mm, the dicalcium highly-purity magnesite have two-stage gradation, respectively 1-0mm and be no more than 0.074mm；
The partial size of the fused magnesite and metallic aluminium powder be respectively 3-1mm and be no more than 0.074mm；Contain in raw material described in every 100kg
The Brown Alundum 15.5kg of 5-3mm, the Brown Alundum 21.5kg containing 3-1mm, the Brown Alundum 26.5kg containing 1-0mm, containing not surpassing
The Brown Alundum 10.5kg for crossing 0.074mm, the fused magnesite 3.5kg containing 3-1mm, the dicalcium highly-purity magnesite containing 1-0mm
7.5kg, containing the dicalcium highly-purity magnesite 4.5kg for being no more than 0.074mm, containing crystalline flake graphite 5.5kg, containing carbon black 1.5kg,
The remaining metallic aluminium powder for no more than 0.074mm；The additional amount of the resin-oatmeal and phenolic resin is respectively the 1.5% of material quality
With 4%；The baking refers to, is uniformly heating to 220 DEG C with the heating rate of 12 DEG C/h, and in 220 DEG C of holding 4.5h.
The preparation method of above-mentioned 300 tons of ladle lashed area aluminium-magnesia carbon bricks, claims respectively first, in accordance with the size grading
Each raw material is taken, and it is suppressed after mixing with the resin-oatmeal of total mass of raw material 1.5% and the phenolic resin of total mass of raw material 4%
Molding is finally uniformly heating to 220 DEG C with the heating rate of 12 DEG C/h, and in 220 DEG C of holding 4.5h, natural cooling is produced
Product.
Bulk use is carried out through scene using the product that the production decision produces.This uses 2 sets of packet bottom impact zone bricks
It is tested in two ladles respectively, using the offline maintenance of ladle using the batch products after about 15 days, wraps bottom impact zone
Brick original depth 300mm, using (target value uses 70 times) after 39 times, 41 times, residual thickness is at least located as 210mm, thickness
It for 230mm, can satisfy completely using target, so judging that this component design is completely suitable for 300 tons of bottom of steel ladle impacts
Area.
Embodiment 2
A kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks, the aluminium-magnesia carbon brick is with Brown Alundum, fused magnesite, dicalcium high purity magnesium
Sand, crystalline flake graphite, carbon black and metallic aluminium powder are raw material, and addition resin-oatmeal and phenolic resin are uniformly mixed and are pressed into thereto
Baking obtains after type, and the Brown Alundum and dicalcium highly-purity magnesite all have independent size grading, tight to be formed in baking
Closs packing integrated structure improves the intensity of aluminium-magnesia carbon brick；The Brown Alundum have level Four gradation, and respectively 5-3mm, 3-1mm,
1-0mm and be no more than 0.074mm, the dicalcium highly-purity magnesite have two-stage gradation, respectively 1-0mm and be no more than 0.074mm；
The partial size of the fused magnesite and metallic aluminium powder be respectively 3-1mm and be no more than 0.074mm；Contain in raw material described in every 100kg
The Brown Alundum 12.5kg of 5-3mm, the Brown Alundum 24.5kg containing 3-1mm, the Brown Alundum 29.5kg containing 1-0mm, containing not surpassing
The Brown Alundum 7.5kg for crossing 0.074mm, the fused magnesite 0.5kg containing 3-1mm, the dicalcium highly-purity magnesite 4.5kg containing 1-0mm,
Containing the dicalcium highly-purity magnesite 7.5kg for being no more than 0.074mm, containing crystalline flake graphite 4.5kg, containing carbon black 0.5kg, remaining is not
Metallic aluminium powder more than 0.074mm；The additional amount of the resin-oatmeal and phenolic resin is respectively the 0.5% and 2% of material quality；Institute
It states baking to refer to, is uniformly heating to 200 DEG C with the heating rate of 8 DEG C/h, and in 200 DEG C of holding 3.5h.
The preparation method of above-mentioned 300 tons of ladle lashed area aluminium-magnesia carbon bricks, claims respectively first, in accordance with the size grading
Each raw material is taken, and it is suppressed after mixing with the resin-oatmeal of total mass of raw material 0.5% and the phenolic resin of total mass of raw material 2%
Molding is finally uniformly heating to 200 DEG C with the heating rate of 8 DEG C/h, and in 200 DEG C of holding 3.5h, natural cooling is produced
Product.
Bulk use is carried out through scene using the product that the production decision produces.This uses 2 sets of packet bottom impact zone bricks
It is tested in two ladles respectively, using the offline maintenance of ladle using the batch products after about 15 days, wraps bottom impact zone
Brick original depth 300mm, using (target value uses 70 times) after 39 times, 41 times, residual thickness is at least located as 200mm, thickness
It for 240mm, can satisfy completely using target, so judging that this component design is completely suitable for 300 tons of bottom of steel ladle impacts
Area.
Embodiment 3
A kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks, the aluminium-magnesia carbon brick is with Brown Alundum, fused magnesite, dicalcium high purity magnesium
Sand, crystalline flake graphite, carbon black and metallic aluminium powder are raw material, and addition resin-oatmeal and phenolic resin are uniformly mixed and are pressed into thereto
Baking obtains after type, and the Brown Alundum and dicalcium highly-purity magnesite all have independent size grading, tight to be formed in baking
Closs packing integrated structure improves the intensity of aluminium-magnesia carbon brick；The Brown Alundum have level Four gradation, and respectively 5-3mm, 3-1mm,
1-0mm and be no more than 0.074mm, the dicalcium highly-purity magnesite have two-stage gradation, respectively 1-0mm and be no more than 0.074mm；
The partial size of the fused magnesite and metallic aluminium powder be respectively 3-1mm and be no more than 0.074mm；Contain in raw material described in every 100kg
The Brown Alundum 14kg of 5-3mm, the Brown Alundum 23kg containing 3-1mm, the Brown Alundum 28kg containing 1-0mm, containing being no more than
The Brown Alundum 9kg of 0.074mm, the fused magnesite 2kg containing 3-1mm, the dicalcium highly-purity magnesite 6kg containing 1-0mm, containing not surpassing
The dicalcium highly-purity magnesite 6kg for crossing 0.074mm, containing crystalline flake graphite 5kg, containing carbon black 1kg, remaining is no more than 0.074mm's
Metallic aluminium powder；The additional amount of the resin-oatmeal and phenolic resin is respectively the 1% and 3% of material quality；The baking refers to, with 10
DEG C/heating rate of h is uniformly heating to 210 DEG C, and in 210 DEG C of holding 4h.
The preparation method of above-mentioned 300 tons of ladle lashed area aluminium-magnesia carbon bricks, claims respectively first, in accordance with the size grading
Each raw material is taken, and it is pressed into after mixing with the resin-oatmeal of total mass of raw material 1% and the phenolic resin of total mass of raw material 3%
Type is finally uniformly heating to 210 DEG C with the heating rate of 10 DEG C/h, and in 210 DEG C of holding 4h, natural cooling getting the product.
Bulk use is carried out through scene using the product that the production decision produces.This uses 2 sets of packet bottom impact zone bricks
It is tested in two ladles respectively, using the offline maintenance of ladle using the batch products after about 15 days, wraps bottom impact zone
Brick original depth 300mm, using (target value uses 70 times) after 39 times, 41 times, residual thickness is at least located as 230mm, thickness
It for 270mm, can satisfy completely using target, so judging that this component design is completely suitable for 300 tons of bottom of steel ladle impacts
Area.
Claims (8)
1. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks, the aluminium-magnesia carbon brick is high-purity with Brown Alundum, fused magnesite, dicalcium
Magnesia, crystalline flake graphite, carbon black and metallic aluminium powder are raw material, and addition resin-oatmeal and phenolic resin are uniformly mixed and suppress thereto
After molding baking obtain, it is characterised in that: the Brown Alundum and dicalcium highly-purity magnesite all has independent size grading, with
Tightly packed integrated structure is formed when baking, improves the intensity of aluminium-magnesia carbon brick；The Brown Alundum has level Four gradation, and is respectively
5-3mm, 3-1mm, 1-0mm and it is no more than 0.074mm, the dicalcium highly-purity magnesite has two-stage gradation, respectively 1-0mm and not
More than 0.074mm；The partial size of the fused magnesite and metallic aluminium powder be respectively 3-1mm and be no more than 0.074mm.
2. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1, it is characterised in that: described in every 100kg
Brown Alundum 12.5-15.5kg in raw material containing 5-3mm, the Brown Alundum 21.5-24.5kg containing 3-1mm, the palm fibre containing 1-0mm
Corundum 26.5-29.5kg contains the Brown Alundum 7.5-10.5kg, the fused magnesite 0.5- containing 3-1mm for being no more than 0.074mm
3.5kg, the dicalcium highly-purity magnesite 4.5-7.5kg containing 1-0mm contain the dicalcium highly-purity magnesite 4.5- for being no more than 0.074mm
7.5kg, containing crystalline flake graphite 4.5-5.5kg, containing carbon black 0.5-1.5kg, remaining is the metallic aluminium powder no more than 0.074mm.
3. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1 or 2, it is characterised in that: every 100kg
Brown Alundum 14kg in the raw material containing 5-3mm, the Brown Alundum 23kg containing 3-1mm, the Brown Alundum 28kg containing 1-0mm,
Containing the Brown Alundum 9kg for being no more than 0.074mm, the fused magnesite 2kg containing 3-1mm, the dicalcium highly-purity magnesite containing 1-0mm
6kg, containing the dicalcium highly-purity magnesite 6kg for being no more than 0.074mm, containing crystalline flake graphite 5kg, containing carbon black 1kg, remaining is not surpass
Cross the metallic aluminium powder of 0.074mm.
4. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1, it is characterised in that: the resin-oatmeal
Additional amount with phenolic resin is respectively the 0.5-1.5% and 2-4% of material quality.
5. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1, it is characterised in that: the resin-oatmeal
Additional amount with phenolic resin is respectively the 1% and 3% of material quality.
6. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1, it is characterised in that: the baking is
Refer to, is uniformly heating to 200-220 DEG C with the heating rate of 8-12 DEG C/h, and in 200-220 DEG C of holding 3.5-4.5h.
7. a kind of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 1, it is characterised in that: the baking is
Refer to, is uniformly heating to 210 DEG C with the heating rate of 10 DEG C/h, and in 210 DEG C of holding 4h.
8. a kind of preparation method of 300 tons of ladle lashed area aluminium-magnesia carbon bricks according to claim 2, it is characterised in that:
Each raw material is weighed respectively first, in accordance with the size grading, and by the resin-oatmeal and raw material of itself and total mass of raw material 0.5-1.5%
The compression moulding after mixing of the phenolic resin of gross mass 2-4%, is finally uniformly heating to 200- with the heating rate of 8-12 DEG C/h
220 DEG C, and in 200-220 DEG C of holding 3.5-4.5h, natural cooling getting the product.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292317A (en) * | 2021-06-07 | 2021-08-24 | 上海利尔耐火材料有限公司 | Long-life VOD refining ladle molten pool magnesium-aluminum-carbon brick and preparation method thereof |
| CN113912404A (en) * | 2021-10-18 | 2022-01-11 | 河南竹林庆州耐火材料有限公司 | Preparation method of economical high-compressive-strength alumina-magnesia-carbon brick |
| CN114736007A (en) * | 2022-02-23 | 2022-07-12 | 上海利尔耐火材料有限公司 | Low-heat-conductivity high-performance aluminum-magnesia-carbon molten pool brick and preparation method thereof |
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| CN113292317A (en) * | 2021-06-07 | 2021-08-24 | 上海利尔耐火材料有限公司 | Long-life VOD refining ladle molten pool magnesium-aluminum-carbon brick and preparation method thereof |
| CN113912404A (en) * | 2021-10-18 | 2022-01-11 | 河南竹林庆州耐火材料有限公司 | Preparation method of economical high-compressive-strength alumina-magnesia-carbon brick |
| CN114736007A (en) * | 2022-02-23 | 2022-07-12 | 上海利尔耐火材料有限公司 | Low-heat-conductivity high-performance aluminum-magnesia-carbon molten pool brick and preparation method thereof |
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